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44 regels
1.2 KiB
44 regels
1.2 KiB
#include "util/serialize_value.h"
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#include <algorithm>
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#include <string>
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#include "util/coding.h"
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#include <iostream>
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namespace leveldb{
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bool compareByFirst(const Field& a, const Field& b) {
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return a.first < b.first; // 按字段名升序排序
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}
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std::string SerializeValue(const FieldArray& fields){
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FieldArray sortFields = fields;
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std::sort(sortFields.begin(), sortFields.end(), compareByFirst);
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std::string result;
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for (const Field& pairs : sortFields) {
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PutLengthPrefixedSlice(&result, pairs.first);
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PutLengthPrefixedSlice(&result, pairs.second);
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}
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return result;
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}
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FieldArray *ParseValue(const std::string& value_str){
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Slice valueSlice(value_str);
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FieldArray *res = new FieldArray;
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Slice nameSlice = Slice();
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Slice valSlice = Slice();
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std::string nameStr;
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std::string valStr;
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while(GetLengthPrefixedSlice(&valueSlice, &nameSlice)){
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nameStr = nameSlice.ToString();
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if(GetLengthPrefixedSlice(&valueSlice, &valSlice)){
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valStr = valSlice.ToString();
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res->emplace_back(nameStr, valStr);
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} else {
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std::cout << "name and val not match!" << std::endl;
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}
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nameSlice = Slice();
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valSlice = Slice();
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}
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return res;
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}
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}
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